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biology 0610printed 75 · PDF 75
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9 The diagram shows a cross-section of part of a leaf.
upper epidermis
SNA ee
lower epidermis
gees
10 An experiment was done using the apparatus shown in the diagram.
The carbon dioxide content of the water in each tube was measured at the start and again three
hours later.
In which tube would there be a decrease in carbon dioxide content?
A B c D
light
ei
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